API keys are required even if not being used

[iujab]

API Key Assignment Fails Without .env File or Key

The original code attempts to unconditionally set API keys for services like OpenAI and ElevenLabs using:

openai.api_key = getenv("OPENAI_API_KEY")
set_api_key(getenv('ELEVENLABS_API_KEY'))

This raises an error in the following situations:

1. .env file is missing or not loaded properly

If the .env file is absent or fails to load, getenv() returns None.

2. Environment variable is undefined

Even with a .env file, if the specific key (e.g., OPENAI_API_KEY) is not defined, getenv() still returns None.

3. APIs expect valid keys

Passing None to openai.api_key or elevenlabs.set_api_key() leads to runtime errors since these libraries expect non-empty strings as valid API keys.